#include "context-internal.h"
#include "ust-compat.h"
#include "lttng-counter-client.h"
+#include "lttng-rb-clients.h"
/*
* Has lttng ust comm constructor been called ?
static const char *str_timeout;
static int got_timeout_env;
-extern void lttng_ring_buffer_client_overwrite_init(void);
-extern void lttng_ring_buffer_client_overwrite_rt_init(void);
-extern void lttng_ring_buffer_client_discard_init(void);
-extern void lttng_ring_buffer_client_discard_rt_init(void);
-extern void lttng_ring_buffer_metadata_client_init(void);
-extern void lttng_ring_buffer_client_overwrite_exit(void);
-extern void lttng_ring_buffer_client_overwrite_rt_exit(void);
-extern void lttng_ring_buffer_client_discard_exit(void);
-extern void lttng_ring_buffer_client_discard_rt_exit(void);
-extern void lttng_ring_buffer_metadata_client_exit(void);
-
static char *get_map_shm(struct sock_info *sock_info);
ssize_t lttng_ust_read(int fd, void *buf, size_t len)
lttng_fixup_net_ns_tls();
lttng_fixup_time_ns_tls();
lttng_fixup_uts_ns_tls();
+ lttng_ust_fixup_ring_buffer_client_discard_tls();
+ lttng_ust_fixup_ring_buffer_client_discard_rt_tls();
+ lttng_ust_fixup_ring_buffer_client_overwrite_tls();
+ lttng_ust_fixup_ring_buffer_client_overwrite_rt_tls();
+}
+
+/*
+ * LTTng-UST uses Global Dynamic model TLS variables rather than IE
+ * model because many versions of glibc don't preallocate a pool large
+ * enough for TLS variables IE model defined in other shared libraries,
+ * and causes issues when using LTTng-UST for Java tracing.
+ *
+ * Because of this use of Global Dynamic TLS variables, users wishing to
+ * trace from signal handlers need to explicitly trigger the lazy
+ * allocation of those variables for each thread before using them.
+ * This can be triggered by calling lttng_ust_init_thread().
+ */
+void lttng_ust_init_thread(void)
+{
+ /*
+ * Because those TLS variables are global dynamic, we need to
+ * ensure those are initialized before a signal handler nesting over
+ * this thread attempts to use them.
+ */
+ lttng_ust_fixup_tls();
}
int lttng_get_notify_socket(void *owner)
lttng_ust_clock_init();
lttng_ust_getcpu_init();
lttng_ust_statedump_init();
- lttng_ring_buffer_metadata_client_init();
- lttng_ring_buffer_client_overwrite_init();
- lttng_ring_buffer_client_overwrite_rt_init();
- lttng_ring_buffer_client_discard_init();
- lttng_ring_buffer_client_discard_rt_init();
- lttng_counter_client_percpu_32_modular_init();
- lttng_counter_client_percpu_64_modular_init();
+ lttng_ust_ring_buffer_clients_init();
+ lttng_ust_counter_clients_init();
lttng_perf_counter_init();
/*
* Invoke ust malloc wrapper init before starting other threads.
lttng_ust_abi_exit();
lttng_ust_abi_events_exit();
lttng_perf_counter_exit();
- lttng_ring_buffer_client_discard_rt_exit();
- lttng_ring_buffer_client_discard_exit();
- lttng_ring_buffer_client_overwrite_rt_exit();
- lttng_ring_buffer_client_overwrite_exit();
- lttng_ring_buffer_metadata_client_exit();
- lttng_counter_client_percpu_32_modular_exit();
- lttng_counter_client_percpu_64_modular_exit();
+ lttng_ust_ring_buffer_clients_exit();
+ lttng_ust_counter_clients_exit();
lttng_ust_statedump_destroy();
lttng_ust_tp_exit();
if (!exiting) {